I' apologize if this has already been addressed. I did a quick search and was unable to find anything on this topic.
I was wondering what your thoughts were on using multiple tools on a project in a workshop environment. I'm in a campaign where the GM and I had a debate on the topic. For example. if I'm in my workshop, and I've built a variable output torch (welding specialist tool), and I've built a multi material 3d printer (specialist tool), as well as having simple tools. All the tools I made have safety features. so a combined roll would have 2 success and 3 advantage. My argument was that in carpentry, you have you simple kit with hammer, nails, a saw, pliers, etc. You can do most things with those tools, but they're not as accurate or efficient. If you then buy a table saw, a miter saw, and a power drill, you gain the benefit of each of the tools on your work (if they're used). His stance is that specialist tools are a set of tools and you would only receive the benefits from 1 set of tools. The workshop encumbrance threshold limits the number of tools you can have, but he feels that allowing them to stack would be game breaking.
I checked the book, but was unable to find anywhere that directly says they do or don't stack. I'm in 2 games in which they do stack and one that they don't. He's allowing me to make a case, but I'll obviously defer to his decision.
Thoughts?